The book is organised around political movements and intellectual currents that had a strong presence in Belgium. Each of the main chapters is dedicated to a key theme in European history: nationhood, empire, the relationship between church and state, political and social equality, peace, and
universalism. The timeframe ranges from the fin de siècle to the interwar years. It thus covers the rise of international associations before the First World War, the impact of the conflagration of 1914, and the emergence of new actors such as the League of Nations.

With its discussion of campaigns and activities that ranged beyond the nation-state, this study is instructive for anyone interested in transnational approaches to history.